An Integrated Fault Identification Approach for Rolling Bearings Based on Dual-Tree Complex Wavelet Packet Transform and Generalized Composite Multiscale Amplitude-Aware Permutation Entropy

Table 1

The brief description of experimental data.

Health state	Fault diameter (mm)	Fault severity	Abbreviation	Training sample number	Testing sample number	Classification label
Normal	None		NM	30	20	0
Inner race fault	0.1778	Minor	IRF1	30	20	1
	0.3556	Medium	IRF2	30	20	2
	0.5334	Severe	IRF3	30	20	3
Outer race fault	0.1778	Minor	ORF1	30	20	4
	0.3556	Medium	ORF2	30	20	5
	0.5334	Severe	ORF3	30	20	6
Ball fault	0.1778	Minor	BF1	30	20	7
	0.3556	Medium	BF2	30	20	8
	0.5334	Severe	BF3	30	20	9